| 1. |
- Mäntylä, Päivi, et al.
(author)
-
Subgingival Aggregatibacter actinomycetemcomitans associates with the risk of coronary artery disease
- 2013
-
In: Journal of Clinical Periodontology. - 0303-6979 .- 1600-051X. ; 40:6, s. 583-590
-
Journal article (peer-reviewed)abstract
- Aim We investigated the association between angiographically verified coronary artery disease (CAD) and subgingival Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Tannerella forsythia and Treponema denticola. Materials and Methods The cross-sectional study population (n = 445) comprised 171 (38.4%) patients with Stable CAD, 158 (35.5%) with acute coronary syndrome (ACS) and 116 (26.1%) with no significant CAD (No CAD). All patients participated in clinical and radiological oral health examinations. Pooled subgingival bacterial samples were analysed by checkerboard DNA–DNA hybridization assays. Results In all study groups, the presence of P. gingivalis, T. forsythia and T. denticola indicated a significant (p ≤ 0.001) linear association with the extent of alveolar bone loss (ABL), but A. actinomycetemcomitans did not (p = 0.074). With a threshold level of bacterial cells 1 × 105 A. actinomycetemcomitans was significantly more prevalent in the Stable CAD group (42.1%) compared to the No CAD group (30.2%) (p = 0.040). In a multi-adjusted logistic regression analysis using this threshold, A. actinomycetemcomitans positivity associated with Stable CAD (OR 1.83, 95% CI 1.00–3.35, p = 0.049), but its level or levels of other bacteria did not. Conclusions The presence of subgingival A. actinomycetemcomitans associates with an almost twofold risk of Stable CAD independently of alveolar bone loss.
|
|
| 2. |
- Pradhan-Palikhe, Pratikshya, et al.
(author)
-
Subgingival bacterial burden in relation to clinical and radiographic periodontal parameters.
- 2013
-
In: Journal of periodontology. - 1943-3670. ; 84:12, s. 1809-1817
-
Journal article (peer-reviewed)abstract
- BACKGROUND: This cross-sectional study characterizes the association between subgingival bacterial profile and periodontal parameters in patients assigned to coronary angiography because of cardiologic problems, which may affect the oral microbiota.METHODS: Pooled subgingival bacterial samples were collected from 477 dentate individuals during the oral examinations, along with periodontal probing depth (PD) and assessments of bleeding on probing (BOP) and radiographic alveolar bone loss (ABL). The checkerboard DNA-DNA hybridization assay was used to determine the levels of 29 oral bacteria, which were divided into three bacterial complexes.RESULTS: All bacterial combinations from the etiologic bacterial group and each species from the red complex were significantly associated (P <0.001) with grade of ABL. The prevalence of the etiologic bacterial group and the level of each species were also associated strongly with the proportion of sites with PD 4 to 5 mm and ≥ 6 mm, BOP, and ABL, except Aggregatibacter actinomycetemcomitans. Levels of Gram-negative oral bacteria correlated significantly with those of Gram-positive species (r = 0.840, P <0.001). In multiple logistic regression analysis, the prevalence of the etiologic bacterial group, levels of Gram-negative bacteria and Treponema denticola, and the prevalence of Porphyromonas gingivalis and T. denticola associated significantly with ABL, whereas other bacterial complexes and levels of Gram-positive species did not.CONCLUSIONS: Although levels of Gram-negative and -positive species paralleled periodontal parameters, only the species considered etiologic were associated with ABL.
|
|
| 3. |
- Aberg, Carola Höglund, et al.
(author)
-
Presence of Aggregatibacter actinomycetemcomitans in young individuals : a 16-year clinical and microbiological follow-up study.
- 2009
-
In: Journal of clinical periodontology. - 1600-051X. ; 36:10, s. 815-22
-
Journal article (peer-reviewed)abstract
- AIM: To look for clinical signs of periodontal disease in young adults who exhibited radiographic bone loss and detectable numbers of Aggregatibacter actinomycetemcomitans in their primary dentition. MATERIAL AND METHODS: Periodontal status and radiographic bone loss were examined in each of the subjects 16 years after the baseline observations. Techniques for anaerobic and selective culture, and checkerboard, were used to detect periodontitis-associated bacterial species. The isolated A. actinomycetemcomitans strains were characterized by polymerase chain reaction. RESULTS: Signs of localized attachment loss were found in three out of the 13 examined subjects. A. actinomycetemcomitans was recovered from six of these subjects and two of these samples were from sites with deepened probing depths and attachment loss. Among the isolated A. actinomycetemcomitans strains, serotypes a-c and e, but not d or f, were found. None of the isolated strains belonged to the highly leucotoxic JP2 clone, and one strain lacked genes for the cytolethal distending toxin. CONCLUSIONS: This study indicates that the presence of A. actinomycetemcomitans and early bone loss in the primary dentition does not necessarily predispose the individual to periodontal attachment loss in the permanent dentition.
|
|
| 4. |
- Akhi, Ramin, et al.
(author)
-
Cross-reactive saliva IgA antibodies to oxidized LDL and periodontal pathogens in humans.
- 2017
-
In: Journal of Clinical Periodontology. - : Wiley. - 0303-6979 .- 1600-051X. ; 44:7, s. 682-691
-
Journal article (peer-reviewed)abstract
- AIM: Oxidized low-density lipoproteins (oxLDL) are formed as a result of lipid peroxidation and are highly immunogenic and proatherogenic. In this study, saliva antibodies binding to oxLDL, Porphyromonas gingivalis (Pg) and Aggregatibacter actinomycetemcomitans (Aa) were characterized and their cross-reactivity was evaluated.MATERIALS AND METHODS: Resting and stimulated saliva samples were collected from 36 healthy adults (mean age 26 years). Saliva IgA, IgG and IgM autoantibody levels to copper oxidized LDL (CuOx-LDL) and malondialdehyde acetaldehyde-modified LDL (MAA-LDL) were determined with chemiluminescence immunoassay.RESULTS: Saliva IgA and IgG antibodies binding to MAA-LDL and CuOx-LDL were detected in all samples and they were associated with the saliva levels of IgA and IgG to P. gingivalis and A. actinomycetemcomitans. Competitive immunoassay showed that saliva antibodies to MAA-LDL cross-reacted specifically with P. gingivalis. The autoantibody levels to oxLDL in saliva were not associated with the autoantibody levels to oxLDL in plasma or with saliva apolipoprotein B 100 levels.CONCLUSIONS: Saliva contains IgA and IgG binding to oxLDL, which showed cross-reactive properties with the periodontal pathogens Porphyromonas gingivalis (P.g). The data suggest that secretory IgA to P.g may participate in immune reactions involved in LDL oxidation through molecular mimicry.
|
|
| 5. |
- Johansson, Anders, 1955-, et al.
(author)
-
Systemic Aggregatibacter Actinomycetemccomitans Leukotoxin-Neutralizing Antibodies in Periodontitis
- 2017
-
In: Journal of Periodontology. - : Wiley. - 0022-3492 .- 1943-3670. ; 88:1, s. 122-129
-
Journal article (peer-reviewed)abstract
- BACKGROUND: The leukotoxin expressed by Aggregatibacter actinomycetemcomitans is a powerful exotoxin, which can cause imbalance in the host response. Immunoreactivity to the leukotoxin is a marker for the presence of leukotoxic A. actinomycetemcomitan, a presence that may modify the disease pattern of the colonized individuals. The aim of the present study was to examine the presence of systemic immunoreactivity to A. actionmycetemcomitans leukotoxin in relation to clinical and inflammatory findings in individuals with or without periodontitis (n = 88).METHODS: The periodontal status was examined in a population of cases (n = 49) and controls (n = 39), and the cases received periodontal treatment. Systemic biomarkers associated with inflammation and infections, as well as the clinical parameters, were analyzed at baseline, three months after treatment and six months after.RESULTS: The presence of immunoreactivity against leukotoxin was associated with impaired remission of the disease after periodontal treatment. This immunoreactivity was also significantly associated with increased systemic levels of A. actinomycetemcomtans-specific immunoglobulins and increasing age.CONCLUSION: The presence and levels of systemic immunoreactivity against A. actinomycetemcomitans leukotoxin are associated with a decreased remission after otherwise successful periodontal treatment.
|
|
| 6. |
- Kopra, Elisa, et al.
(author)
-
Systemic Antibiotics Influence Periodontal Parameters and Oral Microbiota, But Not Serological Markers
- 2021
-
In: Frontiers in Cellular and Infection Microbiology. - : Frontiers Media S.A.. - 2235-2988. ; 11, s. 1-12
-
Journal article (peer-reviewed)abstract
- The use of systemic antibiotics may influence the oral microbiota composition. Our aim was to investigate in this retrospective study whether the use of prescribed antibiotics associate with periodontal status, oral microbiota, and antibodies against the periodontal pathogens. The Social Insurance Institution of Finland Data provided the data on the use of systemic antibiotics by record linkage to purchased medications and entitled reimbursements up to 1 year before the oral examination and sampling. Six different classes of antibiotics were considered. The Parogene cohort included 505 subjects undergoing coronary angiography with the mean (SD) age of 63.4 (9.2) years and 65% of males. Subgingival plaque samples were analysed using the checkerboard DNA-DNA hybridisation. Serum and saliva antibody levels to periodontal pathogens were analysed with immunoassays and lipopolysaccharide (LPS) activity with the LAL assay. Systemic antibiotics were prescribed for 261 (51.7%) patients during the preceding year. The mean number of prescriptions among them was 2.13 (range 1–12), and 29.4% of the prescriptions were cephalosporins, 25.7% penicillins, 14.3% quinolones, 12.7% macrolides or lincomycin, 12.0% tetracycline, and 5.8% trimethoprim or sulphonamides. In linear regression models adjusted for age, sex, current smoking, and diabetes, number of antibiotic courses associated significantly with low periodontal inflammation burden index (PIBI, p < 0.001), bleeding on probing (BOP, p = 0.006), and alveolar bone loss (ABL, p = 0.042). Cephalosporins associated with all the parameters. The phyla mainly affected by the antibiotics were Bacteroidetes and Spirochaetes. Their levels were inversely associated with the number of prescriptions (p = 0.010 and p < 0.001) and directly associated with the time since the last prescription (p = 0.019 and p < 0.001). Significant inverse associations were observed between the number of prescriptions and saliva concentrations of Prevotella intermedia, Tannerella forsythia, and Treponema denticola and subgingival bacterial amounts of Porphyromonas gingivalis, P. intermedia, T. forsythia, and T. denticola. Saliva or serum antibody levels did not present an association with the use of antibiotics. Both serum (p = 0.031) and saliva (p = 0.032) LPS activity was lower in patients having any antibiotic course less than 1 month before sampling. Systemic antibiotics have effects on periodontal inflammation and oral microbiota composition, whereas the effects on host immune responses against the periodontal biomarker species seem unchanged.
|
|
| 7. |
- Mäntylä, Päivi, et al.
(author)
-
Subgingival Aggregatibacter actinomycetemcomitans associates with the risk of coronary artery disease
- 2013
-
In: Journal of Clinical Periodontology. - : Blackwell Munksgaard. - 0303-6979 .- 1600-051X. ; 40:6, s. 583-590
-
Journal article (peer-reviewed)abstract
- Aim We investigated the association between angiographically verified coronary artery disease (CAD) and subgingival Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Tannerella forsythia and Treponema denticola. Materials and Methods The cross-sectional study population (n = 445) comprised 171 (38.4%) patients with Stable CAD, 158 (35.5%) with acute coronary syndrome (ACS) and 116 (26.1%) with no significant CAD (No CAD). All patients participated in clinical and radiological oral health examinations. Pooled subgingival bacterial samples were analysed by checkerboard DNA–DNA hybridization assays. Results In all study groups, the presence of P. gingivalis, T. forsythia and T. denticola indicated a significant (p ≤ 0.001) linear association with the extent of alveolar bone loss (ABL), but A. actinomycetemcomitans did not (p = 0.074). With a threshold level of bacterial cells 1 × 105 A. actinomycetemcomitans was significantly more prevalent in the Stable CAD group (42.1%) compared to the No CAD group (30.2%) (p = 0.040). In a multi-adjusted logistic regression analysis using this threshold, A. actinomycetemcomitans positivity associated with Stable CAD (OR 1.83, 95% CI 1.00–3.35, p = 0.049), but its level or levels of other bacteria did not. Conclusions The presence of subgingival A. actinomycetemcomitans associates with an almost twofold risk of Stable CAD independently of alveolar bone loss.
|
|
| 8. |
- Odermarsky, M., et al.
(author)
-
Human Leucocyte Antigen, Infections and Systemic Inflammatory Biomarkers in Early Atherosclerosis in Children and Adolescents with Type 1 Diabetes
- 2015
-
In: Cardiology in the Young. - 1467-1107. ; 25:Suppl. 1, s. 33-33
-
Conference paper (peer-reviewed)abstract
- Background: This prospective study focuses on factors associated with arterial damage in children with type 1 diabetes (T1D). Materials and Methods: Eighty children and adolescents with T1D (mean age 15, range: 8-20 yrs; mean diabetes duration 7, range: 0.5 to 19 years) were investigated twice, approximately 2 years apart, for carotid artery intima-media thickness (cIMT) and compliance (CAC), flow-mediated dilatation (FMD) of the brachial artery, and plasma levels of matrix metalloproteinase (MMP)-8. HLA genotypes were determined in dried spots of peripheral blood by polymerase chain reaction followed by hybridization assay. The number of respiratory tract infections (RTI) during the past year was obtained by a questionnaire in 56 patients. Results: cIMT progression (% change of cIMT from baseline) correlated inversely with the % changes of both CAC (p = 0.04, r=−0.3, n=62) and FMD (p=0.03, r=−0.3, n=67). RTI frequency correlated significantly with cIMT progression irre- spective of age, diabetes duration, BMI, and HbA1c (p=0.03, r=0.3, in multivariate analysis). When patients were divided in relation to DQ2/8 genotype and RTI, the association of DQ2/8 with cIMT progression remained significant in patients with over three infections/year (p = 0.04, r = 0.3). During follow-up, the group of DQ2/8 patients with CRP > 1 mg/l showed significantly higher levels of plasma MMP-8 than the non-DQ2/8 group. Conclusions: Diabetes-risk genotype DQ2/8 and inflammation con- tribute to vascular changes in children and adolescents with T1D.
|
|
| 9. |
- Pesonen, Erkki, et al.
(author)
-
Infections as a stimulus for coronary occlusion, obstruction, or acute coronary syndromes.
- 2009
-
In: Therapeutic Advances in Cardiovascular Disease. - : SAGE Publications. - 1753-9447 .- 1753-9455.
-
Journal article (peer-reviewed)abstract
- BACKGROUND: : Atherosclerosis is considered to be an inflammatory disease. Infections are a significant cause of inflammation. Acute infections might precipitate acute coronary syndromes (ACS) whereas chronic infections might be stimuli for the development of atherosclerosis. METHODS: : Coronary angiograms were done on 211 of 335 patients with ACS and the percentage of coronary obstruction was determined. Serum antibody levels to Chlamydia pneumoniae, C. pneumoniae heat shock protein 60 (CpnHSP60), human heat shock protein 60 (hHSP60), enterovirus (EV), herpes simplex virus (HSV), cytomegalovirus (CMV), and two major periodontal pathogens, Aggregatibacter actinomycetemcomitans and Porphyromonas gingivalis, were measured in healthy controls (n = 355) and all patients. RESULTS: : Serum antibody levels to periodontal pathogens did not correlate with ACS. However, IgA-class antibody levels to Aggregatibacter actinomycetemcomitans (p = 0.021), CpnHSP60 (p = 0.048) an hHSP60 (p = 0.038) were higher in patients with coronary occlusion or obstruction compared to those without any obstruction. Odds ratios for coronary changes in the highest quartile as compared to the lower quartiles were for A. actinomycetemcomitans IgA 7.84 (95% CI 1.02-60.39, p = 0.048), for CpnHSP60 IgA 8.61 (1.12-65.89, p = 0.038), and for human HSP60 IgA 3.51 (0.79-15.69, p = 0.100). CONCLUSIONS: : We have previously reported that EV and HSV titres correlated significantly to acute coronary events. They do not correlate to the degree of coronary obstruction as shown here. However, infection by A. actinomycetemcomitans or C. pneumoniae or host response against them associated with coronary obstruction. Clinical coronary events may arise by the effect of acute infections and obstructing lesions by a chronic inflammatory stimulus.
|
|
| 10. |
- Pietiäinen, Milla, et al.
(author)
-
Saliva and Serum Immune Responses in Apical Periodontitis
- 2019
-
In: Journal of Clinical Medicine. - Basel, Switzerland : MDPI. - 2077-0383. ; 8:6
-
Journal article (peer-reviewed)abstract
- Apical periodontitis is an inflammatory reaction at the apex of an infected tooth. Its microbiota resembles that of marginal periodontitis and may induce local and systemic antibodies binding to bacteria- and host-derived epitopes. Our aim was to investigate the features of the adaptive immune response in apical periodontitis. The present Parogene cohort (n = 453) comprises patients with cardiac symptoms. Clinical and radiographic oral examination was performed to diagnose apical and marginal periodontitis. A three-category endodontic lesion score was designed. Antibodies binding to the bacteria- and host-derived epitopes were determined from saliva and serum, and bacterial compositions were examined from saliva and subgingival samples. The significant ORs (95% CI) for the highest endodontic scores were observed for saliva IgA and IgG to bacterial antigens (2.90 (1.01-8.33) and 4.91 (2.48-9.71)/log10 unit), saliva cross-reacting IgG (2.10 (1.48-2.97)), serum IgG to bacterial antigens (4.66 (1.22-10.1)), and Gram-negative subgingival species (1.98 (1.16-3.37)). In a subgroup without marginal periodontitis, only saliva IgG against bacterial antigens associated with untreated apical periodontitis (4.77 (1.05-21.7)). Apical periodontitis associates with versatile adaptive immune responses against both bacterial- and host-derived epitopes independently of marginal periodontitis. Saliva immunoglobulins could be useful biomarkers of oral infections including apical periodontitis-a putative risk factor for systemic diseases.
|
|
